发明名称 |
Fail-safe, weight-responsive skate retarder |
摘要 |
The present invention relates to a fail-safe skate retarder that applies a braking force proportional to the weight of a rail car entering the retarder. Each segment of the retarder includes a lever mechanism with a pair of levers rotatably joined under the running rail. Each lever holds a braking rail for engaging a wheel of the car. The retarder is normally in a lower, fail-safe position with the brake rails closer together than the width of the wheel. When the car enters the retarder, the wheel forces the brake rails apart into a braking position, and the middle of the lever mechanism rises to lift the running rail and car. A hydraulic power unit and cylinder is activated to raise the middle of the lever mechanism even further to a release position so that the brake rails are spread apart more than the width of the wheel.
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申请公布号 |
US7306077(B2) |
申请公布日期 |
2007.12.11 |
申请号 |
US20050134592 |
申请日期 |
2005.05.19 |
申请人 |
AAA SALES + ENGINEERING, INC. |
发明人 |
HEYDEN THOMAS J.;ZAWLOCKI MARK |
分类号 |
B61K7/04 |
主分类号 |
B61K7/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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